diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2020-02-08 12:58:01 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2020-02-13 14:14:54 +0000 |
| commit | 4f9584ed4bba8a57a3cb2fa48a682725005d530a (patch) | |
| tree | 3f726e63b54c96e7de87f76732b3f2165a2a6298 /target/arm/internals.h | |
| parent | d8564ee4e5bce87ec1fdf23656df9367eb1bc571 (diff) | |
target/arm: Split out aarch32_cpsr_valid_mask
Split this helper out of msr_mask in translate.c. At the same time,
transform the negative reductive logic to positive accumulative logic.
It will be usable along the exception paths.
While touching msr_mask, fix up formatting.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200208125816.14954-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/arm/internals.h')
| -rw-r--r-- | target/arm/internals.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/target/arm/internals.h b/target/arm/internals.h index 6be8b2d1a9..4d4896fcdc 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1061,6 +1061,27 @@ static inline bool arm_mmu_idx_is_stage1_of_2(ARMMMUIdx mmu_idx) } } +static inline uint32_t aarch32_cpsr_valid_mask(uint64_t features, + const ARMISARegisters *id) +{ + uint32_t valid = CPSR_M | CPSR_AIF | CPSR_IL | CPSR_NZCV | CPSR_J; + + if ((features >> ARM_FEATURE_V4T) & 1) { + valid |= CPSR_T; + } + if ((features >> ARM_FEATURE_V5) & 1) { + valid |= CPSR_Q; /* V5TE in reality*/ + } + if ((features >> ARM_FEATURE_V6) & 1) { + valid |= CPSR_E | CPSR_GE; + } + if ((features >> ARM_FEATURE_THUMB2) & 1) { + valid |= CPSR_IT; + } + + return valid; +} + /* * Parameters of a given virtual address, as extracted from the * translation control register (TCR) for a given regime. |